#include <stdio.h>

#define NONE "\033[0m"
#define BLUE "\033[1;34m"
#define BLUE2 "\033[1;34;44m"

int main()
{
    printf(BLUE"hello test_color!"NONE"\n");
    printf(BLUE2"   "NONE"\n");
    printf(BLUE"   "NONE"\n");
    // printf("%d", strlen(BLUE" "NONE));
    return 0;
}
